Cleanup some PWL interfaces.

fpdfsdk/fxedit/include/fxet_edit.h

 // Copyright 2014 PDFium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
 
 #ifndef FPDFSDK_FXEDIT_INCLUDE_FXET_EDIT_H_
 #define FPDFSDK_FXEDIT_INCLUDE_FXET_EDIT_H_
 
 #include <memory>
@@ skipping 548 matching lines @@
 
   int32_t GetTotalLines() const;
 
  private:
   friend class CFX_Edit_Iterator;
   friend class CFXEU_InsertWord;
   friend class CFXEU_InsertReturn;
   friend class CFXEU_Backspace;
   friend class CFXEU_Delete;
   friend class CFXEU_Clear;
-  friend class CFXEU_ClearRich;
   friend class CFXEU_InsertText;
 
   void SetSel(const CPVT_WordPlace& begin, const CPVT_WordPlace& end);
 
   void RearrangeAll();
   void RearrangePart(const CPVT_WordRange& range);
   void ScrollToCaret();
   void SetScrollInfo();
   void SetScrollPosX(FX_FLOAT fx);
   void SetScrollPosY(FX_FLOAT fy);
@@ skipping 124 matching lines @@
                            int32_t charset,
                            int32_t nFontIndex) override;
   int32_t GetDefaultFontIndex() override;
   FX_BOOL IsLatinWord(uint16_t word) override;
 
  private:
   IPVT_FontMap* m_pFontMap;
 };
 
 #endif  // FPDFSDK_FXEDIT_INCLUDE_FXET_EDIT_H_